Command Priorities and Priority Arrays
Some objects in your management platform use specialized command priorities to determine whether an operator or a particular control program is in control.
Command Priority
The Present Values of six object types in your management platform are based on a command priority and established in a hierarchy that ranks from highest (1 – Manual Life Safety) to lowest (16 - Available). The six object types are Analog Output, Analog Value, Binary Output, Binary Value, Multi-State Output, and Multi-State Value. The hierarchy helps determine which source has priority over another to change the value of an object. To command one of these object types, you—or an application—must have a command priority equal to or greater than the current command priority of the object.
Command Priority Array
The Command Priority Array displays commands that have been issued at various priority levels. Users and applications can set or relinquish (release) commands for a commandable object. If the Present Value of an object has a Command Priority Array, the appropriate priority level is commanded or relinquished when you execute a command. If the Present Value of an object does not have a Command Priority Array, the system overwrites the present value with the newly commanded value. You can command or relinquish any priority level that you have access to, based on your user privileges.
The following table shows the Command Priority Array:
Priority Level | Priority Name |
1 | Manual Life Safety |
2 | Automatic Life Safety |
3 | Available |
4 | Available |
5 | Critical Equipment Control |
6 | Minimum On/Off |
7 | Available |
8 | Manual Operator |
9 | Available |
10 | Available |
11 | Available |
12 | Available |
13 | Available |
14 | Available |
15 | Available |
16 | Available |